Precise temperature control system for friction testing machine

Abstract

The invention discloses a precise temperature control system for a friction testing machine and belongs to the field of friction testing machines. The precise temperature control system comprises a friction test piece container, a circulating water constant-temperature device and a silicon controlled temperature control instrument, wherein the friction test piece container comprises an inner cavity, an outer cavity, a base and a top cover; a friction test piece and a lubrication medium are arranged in the inner cavity; the circulating water constant-temperature device comprises a constant-temperature water circulating pipeline and a constant-temperature water temperature control mechanism; a heat exchange water pipe of the constant-temperature water circulating pipeline is arranged in the outer cavity of the friction test piece container in a sleeving manner; the constant temperature of the outer cavity of the friction test piece container is controlled by the constant-temperature water temperature control mechanism according to preset temperature values; the silicon controlled temperature control instrument can be used for controlling the temperature of the inner cavity of the friction test piece container according to preset temperature values by a temperature sensor and a heating element. According to the system, temperature control conditions are optimized by shielding interference of external factors to a temperature control process, so that a constant temperature process is relatively stable, and the reliability of friction test results is improved; in additional, a circulating water structure is beneficial to fast cooling after a test, and the test period is shortened.

Description

technical field [0001] The invention relates to a precise temperature control system for a friction testing machine, which belongs to the field of friction testing machines. Background technique [0002] The system temperature of the friction testing machine is an important parameter in the friction and wear test and the development of the testing machine. The precise control of the temperature determines the accuracy and objectivity of the friction and wear test to a large extent. Due to the simplification of the structure of the friction tester in the prior art and the complexity of the external environment where the friction test is located, the temperature fluctuations during the test process are relatively large, generally the temperature fluctuations are ±3°C to ±5°C, especially in When the ambient temperature is too high in summer, its impact is more significant, which directly affects the reliability of the results of the friction and wear test, and cannot meet the i...

AI Technical Summary

Problems solved by technology

Due to the simplification of the structure of the friction tester in the prior art and the complexity of the external environment where the friction test is located, the temperature fluctuations during the test process are relatively large, generally the temperature fluctuations are ±3°C to ±5°C, especially in When the ambient temperature is too high in summer, its impact is more significant, which directly affects the reliability of the results of the friction and wear test, and cannot meet the increasing accuracy requirements of the friction testing machine for the adjustment of the test temperature; in addition, the prior art friction testing machine is not fast. Cooling device, rely on natural cooling to cool down after the test, the test period is long

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